azure-servicebus-tls-version-outdated: Azure Service Bus Namespace TLS Version Not Latest

id: azure-servicebus-tls-version-outdated
info:
  name: Azure Service Bus Namespace TLS Version Not Latest
  author: princechaddha
  severity: medium
  description: |
    Ensure that your Azure Service Bus namespaces are using the latest supported version of the TLS protocol (i.e., TLS 1.2) in order to enhance security by providing stronger encryption, protecting data integrity, and reducing vulnerabilities to cyber attacks.
  impact: |
    Using an outdated TLS version can reduce data protection and make the service vulnerable to cyber attacks.
  remediation: |
    Update your Azure Service Bus namespaces to use the latest supported TLS version, TLS 1.2, to ensure improved security and data protection.
  reference:
    - https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-tls
  tags: cloud,devops,azure,microsoft,servicebus,azure-cloud-config

flow: |
  code(1);
  for (let NamespaceData of iterate(template.namespaceList)) {
    NamespaceData = JSON.parse(NamespaceData);
    set("name", NamespaceData.Name);
    set("resourceGroup", NamespaceData.ResourceGroup);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az servicebus namespace list --output json --query '[*].{"Name":name,"ResourceGroup":resourceGroup}'

    extractors:
      - type: json
        name: namespaceList
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
      az servicebus namespace show --name "$name" --resource-group "$resourceGroup" --query 'minimumTlsVersion'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - '"1."'

      - type: word
        words:
          - '"1.2"'
        negative: true

    extractors:
      - type: dsl
        dsl:
          - 'name + " in " + resourceGroup + " is not using TLS 1.2"'
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